Terahertz lenses made by compression molding of micropowders

被引：75

作者：

Scherger, Benedikt ^{[1
]}

Scheller, Maik ^{[1
]}

Jansen, Christian ^{[1
]}

Koch, Martin ^{[1
]}

Wiesauer, Karin ^{[1
,2
]}

机构：

[1] Univ Marburg, Fac Phys, D-35032 Marburg, Germany

[2] RECENDT Res Ctr Non Destruct Testing GmbH, A-4020 Linz, Austria

来源：

APPLIED OPTICS | 2011年 / 50卷 / 15期

关键词：

TIME-DOMAIN SPECTROSCOPY; DIELECTRIC-PROPERTIES;

D O I：

10.1364/AO.50.002256

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a simple and versatile approach for fabricating terahertz lenses based on compression molding of micropowder polymer materials in a tabletop hydraulic press. To demonstrate the feasibility of this approach, a biconvex lens shape is calculated using a ray-tracing algorithm and lenses based on two different micropowders are fabricated. As the powder materials have different refractive indices, the resulting lenses share the same geometric shape but differ in their respective focal length. The focusing properties of the lenses are evaluated by transversal and sagittal beam profile measurements in a fiber-coupled terahertz time-domain spectroscopy system, confirming the excellent imaging qualities of the compression molded lenses. (C) 2011 Optical Society of America

引用

页码：2256 / 2262

页数：7

共 34 条

[1] Diagnosing water content in paper by terahertz radiation [J].